It grows steeply with \(\rho \) .
By contrast, when the reconnection diffusion of magnetic field is taken into account,
\(\mathcal {E}\)  has a much weaker dependence on \(\rho \) .
The removal of magnetic flux during compression has been numerically demonstrated by, e.g,
[1]}.
Despite the additional magnetic field amplification via gravitational compression,
the balance between the growth of magnetic fields and the reconnection diffusion of magnetic fields still stands,
and the growth ceases when \(\mathcal {E}\)  reaches equipartition with the turbulent energy of the largest eddy at \(L\) .
<FIGURE>